Paper-box-making machine



April 21 1 25. 1,534,569

C. BUTTERFIEL D PAPER BOX MAKING MACHINE Filed g- 1925 6 Shets-Sheet 1 &

811w: ntoz April 21, 1925. 1,534,569

c. BUTTERFIELD PAPER BOX MAKING MACHINE Filed Aug. 1923 6 Shets-Sheet 2 April 21, 1925. 1,534,569

' c. BUTTERFIELD PAPER BOX MAKING MACHINE Filed Aug. 8, 1925 6 Sheets-Sheet 5 April 21 c. BUTTERFl-ELD PAPER BOX MAKING MACHINE Filed Aug. 8, 1923 e snets sheet 4 April 21, 1925 C. BUTTERFIELD PAPER BOX MAKING MACHINE Filed Aug. 8, 1925 April 21, 1925.

c. BUTTERFIELD PAPER BOX MAKING MACHINE Filed Ailg. 8, 1925 6 Sheets-Sheet 6 To allfwhom it may concern:

t which the Patented Apr. 21, 1925.

UNITED STATES PATENT OFFICE.

CHARLES rurrmwmnn, or mnnnn'rown, 01110, assrenon are THE mrnnsrn'rn Y ronnmerox-co1\ u A1-I r or mnnnnrown, 01110.

PAPER-BOX-MAKING Machine.

Application tiled August s, 1923. Serial No. 656,397.

Be it known that I, CHARLES Bur'rnn- FIELD, a citizen ofthe United States, residing at Middletown, in the county of Butler and State of Ohio, have invented certain new and useful Improvements in Paper- Box-Makin Machines and the like, of

ollowing is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in paper box making machines.

The invention relates especially to paper box making machines of the type in which the boxes are formed from blanks which are cut and scored for folding beforethe same are supplied to the machine, and upon which paper blanks'to the machine, forming and gluing of the boxes, and delivery from the machine of the finished product are accomplished by'automatic operations.

The object of the invention is to provide a machineof the character of simple construction, which will produce a superior product, and which will be capable of large production.

While the machine is shown in the accompanying drawings in a preferred form for the production of paper boxes of the design illustrated, it will be seen that theprinciple of the invention is readily adaptable by rethe machine taken on line 22 arranging various parts of the mechanlsm to producing paper boxes of variable sizes and designs. i

In the drawings-'2, v Fig. 1, is a plan view of the machine;

Fig; 2,"s a longitudinal sectional view ,of

Fig. 2*, is a detail sectional view of the paper guides; I

Fig. 3, .is a cross-sectional view of the machine taken on line 3- -3 of Fig. 2;

Fig. 4c, is a cross-sectional view of the machine taken on line-H of'Fig. 2;

-Fig.' 5, is a. detail cross-sectional view taken on the line 5 -5 of Fig. 4;; Fig. 6, is a cross-sectional viewtaken on the 11116 6-6 of Fig. 2;

Fig. 7, is-a sectional plan view taken on line 7'-7 of Fig. 2;

Fig. 8, is a detail view in longitudinal section on line 8+8 of Fig.

Fig. 9, is a detail view in as the successive operations of feeding the v of Fig. 1;;

.cured to a shaft 9, supported in opposite brackets 10',

, screws 11, threaded into brackets-10 and Fig. 10, is a diagram of the driving mechanism on the left side of the machine;

Fig. 11, is a diagram of the driving mechanism on the right side of the machine;

Fig. 12, is a vertical sectional view through one of the glue supply tubes;

Fig. 13, is a view of the paper blank showing the position of the glue as applied thereto;

Fig. 14, is a detail end view illustrating the first step of folding the box blank;

Fig. 15, is a plan view of the blank as illustrated in Fig. 14;

' Fig. 16 is a. sectional view illustrating the completion of the folding operation, and Fig. 17, is a view of the completed-box delivered from the machine. As here shown the paper box making machine comprises three groups of' coordinated mechanisms consisting of the feeding mechanism A, for the paper blanks from which the boxes are made, the gluing mechanism 'B for supplying glue, or any suitable adhesive, to portions of the blank which are glued together, and the forming mechanism -C which forms the box.

- The machine as a whole is supported on a suitable frame comprising opposite side frame members 1 and crossframe memhers 2, in which is supported a main drive shaft 3, which has secured to one end cross frame members 2-2, constitute a support 'for the paper blanks 7 which are arranged in an inclined stack as illustrated in Fig. 2, of the drawings. The angle at which the paper blanks are stacked on the mahine can be regulated as desired by means of opposite guides 8, which are se- 00 side frame brackets -1, by'means of clamp being adjustable on the shafts, transversely oi the machine. to osition thesame relative to thewidth o the paper blanks, and angularly in a vertical plane to determine the degree of inclination of the stack of paper blanks. Guides 8 are further adjustable longitudinally in their angular plane by.means of adjusting having annular shoulders 12, coacting with slides -12 secured to the guides 8 and slidingly mounted in the brackets -10, whereby the guides can be adjusted relative to bars -6 to effect delivery of but one blank from the bottom of the stock in one operation of the feeding mechanism.

The paper blanks are delivered singly from the under side of the supply stack by means of a reciprocating carriage comprising a series of parallel bars -16 supported 011 a carriage base 17, and equally spaced thereon to operate between the stationary supporting bars 6, each bar 16 having its upper surface covered with a strip l8 of yieldable material, as rubber, to provide for effective frictional engagement with the paper blanks. The carriage is supported on rollers 19 mounted in depending brackets -20 secured to the carriage base 17 and operable upon ways 21. The carriage 17 is held on the ways 21 by projections -17 having pins -17 which lie under the ways. The reciprocating movement of the carriage upon ways 21 is effected by means of a depending bracket 23 and to a drive shaft 24 by means of a pitman head25. The carriage also has a vertical reciprocal movement relative to the bars 6 which is imparted thereto by means of cams 26, the cams being secured to opposite cam shafts -27 supported in bearing brackets 1 secured to the opposite side frames 1, the cams being arranged to engage rollers 28 which are connected by depending brackets -29 to the carriage ways 21 which in turn are supported from cross frame members 2 by depending brackets -30, the ways being connected to the brackets by means of lugs 31 extending into slots 32 which permits of the upward movement imparted to the ways 21 and the feeding carriage by action of cams -26.

At the beginning of the idle stroke of the feeding operation the mechanism will be substantially in the elation shown in Figs. -2 and 8, the feeling carriage being in its lowermost position with bars 16 out of contact with the paper blanks. On the back stroke of pitman 22, the feeding carriage will be moved to the extreme opposite position from that shown in Fig. 2, and upon beginning of the forward stroke of thepitman, cams 26, having made a half turn, will act through their enga ements with rollers 28 to raise the fee ing carriage, thus bringing the rubber-covered bars 16 into engagement with the lowermost paper blanln-theiblank being advanced from the supply stack, through frictional contact with bars 16, into engagement with pick-up rollers 83, which are secured to shafts -34 supported in side-frames 1.

Rollers 33, advance the paper blanks over opposite guides 35 to the gluing mechanism, the blanks passing between a platen 36 and opposite upper guides 37 into engagement with opposite stops 38 which act. to align the forward end of the blanks and to stop the same in position to receive the glue. The upper guides are supported by blocks 37 and rods 87" extending from frames 67. As best shown in detail Fig. 8, stops 38 each consists of a plunger 39 supported in a depending housing 40 on a cross frame member 2, and adapted tobe actuated by a cam 41 secured to a shaft 42 extending transversely of the machine and supported in hearings in the side frame members of the machine. The upper end of plunger 39 is provided with an enlarged head t3 which is notched on one side to receive the end of a squared shaft 44: which connects the opposite stops one with the other and is secured to the plunger heads 43 by means of side plates -45, which are fastened on the heads 43 in any suitable manner, as by screws. Also mounted on the rod or shaft 44 are blocks 43 secured thereto by plates 45 Secured ineach plate 45f,.is a forwardly extending arm which has a stop lug 47 having a projection 48 adapted to be moved upon the upward'thrust of the plunger into the path of the paper blanks as the same are advanced to the gluing mechanism. Each stop is provided with an inwardly inclined guide -50, secured to the projections '48 as best shown in Fig. 7, which is in position when the stops are raised to engage an angular edge 0 of the paper, thusacting to align the forward ends'of the blanks longitudinally. In the position shown in Fig. 8. the stops are in raised position. In the idle movement of cams 41 the stops drop to their disengaged position by gravity and under tension of springs 51 which are connected to'plunger heads 43 and cross frame member The mechanism for applying glue to the paper blanks consists of a container 52 adapted to receivea' suitable supply of glue. and having four downwardly extended tubes -53 which are open at their upper ends to the container and are each adapted to make a deposit of glue on each paper blank. An enlarged longitudinal section view of one of the tubes 53 is shown in Fig. 12. Their construction consists of the tube 53 which is threaded into the container as shown at 54 and is held in fixed relation thereto by means of an adjusting lock nut 55. The lower end of the tube is provided with an end cap 56, having a port 57 through which the glue is delivered. the discharge end of the port being covered with a fabric pad -58, as felt. and the pad with a wire screen -59, which serve to spread the glue evenly upon the surface of the blank as it is applied thereltli) in Figs. 2

ber -2, the plungers to,-the extent of surface covered being determined by an apertured cap -60 threaded into end caps -56 which serves to hold pad -58 and screen -59 in position over port -57. Beneath each tube -53, the platen is provided with an opening -36 which permits the blank to form its own cushion when receiving the application of glue. Coacting with port -57 is a valve comprising a valve seat -61, adapted to restrict the discharge of glue through port -57, a valve stem -62 to which the valve seat is attached, extending upwardly through the glue. container and supported in a cross strip -63 secured to the top of the container, the upper end of the valve stem being provided with a finger piece 64, by means of which the valve can be manipulated to insure free passage of the glue through tube -53 and port 57.

The glue container as a whole -is supportedon a shaft -65 by means of brackets -66, the shaft being adjusted to opposite vertical ways -137 by guide sleeves'-66, and connected at its opposite ends to pitmans -69 which are connected at their opposite ends to crank sleeves -70 secured to a'drive' shaft -71, thus a vertical reciprocal movement will be imparted to the glue container and a deposit of glue will be made on a paper blank upon each stroke of the pitmans, the positionof the glue on the blanks being illustrated a at d-al in Fig. 13, of the drawings.

A series of feed rollers comprising three sets as. here shown .72-72, 7474, and 76-76, mounted on shafts 73-73, -75 and 77-77, respectively act upon the paper blanks after glue has been applied thereto to advance the same to the box forming mechanism -C. Rollers 7 2-7 2 are out of engagement one with the other, as best shown and -6, of the drawings during the interval the glue is being applied to the blanks, and are then moved into feeding relation one with the other to advance the blank. To this end upper shaft -73 which carries upper roller -72 is mounted at'its opposite ends in floating bearing blocks -78 in opposite frame members -1, the shaftbeing supported in its raised position by compression springs -79, acting against the bearing blocks as own in Fig. 9, and moved to its lowered tension of springs -7 by pressure exerted -80 actuated by plungers -81 supported in housi gs -82 secured to a cross frame membeing actuated by cams -83 supported on shaft -42. Plun ers -81 are provided attheir upper ends with adjusting screws -84 .for adjusting the relation of the plunger with lever -80.

The box forming mechanism consists of a die member comprising an apertured rectangular-shaped base -85 supported upon ,lposition against the 7 8by pivoted leverscross frame member -2, and having upwardly extended lugs -86 at the four corners thereof which serve as pivot bearing supports for opposite spring tension forming guides -87 and -88-88 which are arranged at right angles one with another adjacent the upper edge of the die aperture. The coacting member of the die consists of a vertically reciprocating rain or plunger supported on a shaft -90 and comprising aplurality of vertically arranged members -91 assembled as a unit on a head member -92 by screws -93, the plunger being seoured to shaft -90 by mounting brackets -94. The vertical reciprocal movement is transmitted to the mans -95 which are connected at one end to shaft -90 and at their opposite ends to gears -96 and -97, shaft -90 being adapted to slide in vertical ways -98 by means of guide sleeves -99, the ways being secured to the opposite side frames -1.

The successive steps of forming the boxes are illustrated in Figs. 13 to -17. The outline of the paper blank, full open and fiat, is shown in Fig. 13, the glue deposits thereon being'indicated at -11 -(Z. Each blank as it is advanced by freed rollers -16 is brought to position over the forming die by opposite stops -100 supported on guides -35, which have their inner faces inclined as indicated at -101-, to engage the angular edges -0 of the blanks to align the blanks as the same are brought to position over'the forming die. Figs. -14 and -15 are end and plan views respectively illustrating the initial movement of the forming action. As here shown the forming plunger has moved into engagement with "the paper blank, having pressed the central portion -e of theblank downwardly against spring tension plates -87 which have been moved by action of the plunger to the angularp'osition shown.

In this relation the central portion of the blank is in a horizontal plane across the end of the plunger, side portions -f -y' are turned upwardly to the angle of plates -87, opposite upwardly projecting flanges -89 of plates -87 acting to turn the'corner reinforcing flaps -g inwardly in advance of portions -h -z' which are turned upwardly by the later action thereon of spring pressure plates -88. Fig. 16 illustrates the position of the parts as the box is brought to completion in the forming die. In this relation gluing .ofthe corner flaps -g to portions -h is-accomplished by .the pressure exerted thereon between plates -88 and the tapered end of the forming plunger. Fig. 17 illustrates the complete box as delivered into a delivery chute -102 through which the boxes are discharged from the machine nested one within another as illustrated in Fig. 4. From the position illustrated in Fig. 16 the completedboxes are moved, by

plunger by opposite pitfurther downward movement of the plunger,

into an enlarged space -103 of the forming die in which theboxes expand sufliciently, as they are freed from the pressure thereon of plates -87 and -88, to cause their upper edges to engage shoulders -104 of the die and thus to be stripped from the end of the plunger at the beginning of its upward movement.

The delivery chute is formed of two angular pieces of metal -105 and a fiat flexible piece -106 arranged relatively one to another and curved as shown in Figs. -4 and -43 to direct delivery of the boxes to the side of the machine, the flexible piece -106 acting to retard the movement of the boxes through the chute by frictional contact therewith thus causing complete nesting of the boxes one within another as they are delivered from the forming die and providing time for the glue to set before the boxes are delivered from the machine.

The power transmission mechanism for the machine is illustrated in diagrammatic views in Figs. 10 and -11, -Fig. 10 being a side elevationof the left side and Fig. 11 of the'right side of the machine as viewed from the front. The power shaft -3, supported in the opposite main frames -1, adjacent the rear end of the machine, has opposite drive gears -107 -1OS secured there to outwardly. adjacent frames -1, the drive gears being directly connected with opposite gears -96 -97 which operate the form- F iug plunger through pitman connections -95. On the left side of the machine the transmission from gear -97 is through intermediate gears -109 -110 -111 -ll2 -1l3 and gear -114: to shaft -42 to which cams -41 and -83 are attached. Gear 111 also meshes with a gear -115 secured to the pitman crank shaft "-71 by means of which the gluing device is reciproeated. From gear -115 the movement is through idle gear -116 and drive gear -117 to crank shaft -2-l through which the feed carriage -17 is operated. From gear -117 movement is also transmitted through intermediate gear -llS and gear -1l9 to inner cam shaft -27 and from gear -119 through intermediate gears -1 20 -12l -122 and gear -123 to outer cain shaft -27, the shafts -27 each supporting one of the sets of cams -26 by means of which vertical reciprocal movement is imparted to the feeding carriage -17.

On the right side of the machine, as illustrated in Fig. 11, the transmission from gear -96 is through an intermediate gear -124 to a gear -l25 secured to lower feed roller shaft -75, and from gear -125 to gear -126 secured to upper feed roller shaft -75, from gear -l26 also mounted on up-' per shaft -75, through'intermediate gear -127 to gear -128 secured to upper feed roller shaft -77 and from gear -128 to gear -129 on lower feed roller shaft -77. Feed rollers -72 and -33 are driven in like manner from gear -96, the movement to roller -72 being through intermediate gears -13O -13l -132 and gears -133 and -134 secured to upper and lower feed roller shafts -73 and to feed rollers -33 from gear -132 through intermediate gears -135 -136 to gears -l37 and -138 secured respectively to upperand lower feed roller shafts -34. As a mechanical expedient, to effect convenience in assembling, gear -l2l is mounted on an adjustable radius arm -124.

From the foregoing detailed description and the illustrations of the drawings the construction and operation of the improved box dforming machine will be readily understoo Having described my invention, I claim:.

1. A paper box making machine, including in combination with mechanism adapted to form the boxes from paper blanks, means for delivering the blanks to the forming mechanism including feeding mechanism adapted to deliver the blanks singly from a supply of blanks stacked thereon, means interposed between said feeding and forming mechanisms for applying an adhesive to the blanks consisting of a reciprocating container for the adhesive'timedin operation with said feeding mechanism and having a plurality of valve controlled discharge apertures for depositing the adhesive on predetermined portions of each blank.

2. A paper box making machine, including in combination with mechanism adapted to form the boxes from paper blanks, a

means for delivering the blanks to the forming mechanism including feeding mechanism adapted to deliver the blanks singly from a supply of blanks stacked thereon, means interposed between said feeding and forming mechanisms for applying an adhesive to the blanks consisting of a plurality of valve controlled containers adapted to be actuated to make a regulated deposit of adhesive on portions of each blank. 3. A paper box making machine, including in combination with mechanism adapted to form the boxes from .paper blanks, a means for delivering the blanks to the forming mechanism including feeding mechanism adapted to deliver the blanks singly from a supply of blanks stacked thereon, means interposed between said feeding and forming mechanisms for ap lying an adhesive to the blanks consisting of a plurality of valve controlled containers adapted to be actuated to make a regulated deposit of adhesive on portions of each blank, and means coacting with the blank feeding mechanism for stopping and aligning the blanks relative to the mechanism for applying the adhesive.

4. A paper box making machine including 'ative to said in combination with mechanism adapted to form the boxes from paper blanks, a means for delivering the blanks to the forming mechanism including feeding mechanism adapted todeliver the blanks singly from a supply of blanks stacked thereon, means interposed between said feeding and. forming mechanisms for applying an adhesive to the blanks consisting of a plurality of valve controlled containers adapted to be actuated to make a regulated deposit of adhesive on portions of each blank, and means coacting with said blank feeding mechanism and comprising separable feed rollers and stops acting therewith for positioning the blanks rel- 5. A box making machine comprising a box forming unit having power mechanism applied thereto, feeding mechanism adapted to deliver box blanks to the box forming mechanism, mechanism arranged between said feeding and forming mechanisms for applying an adhesive to the blanks to form the box joints, said mechanism being arranged in fixed relation and in longitudinal alignment one with another; and operating connections driven from the box forming unit and coordinated with the operation thereof whereby said feeding and adhesive applying mechanism are operatively timed therewith.

6. A box making machine comprising a box forming unit having power mechanism applied thereto, feeding mechanism including means for delivering box blanks singly from a stack of blanks, and intervening carrien mechanism for delivering the blanks singly to the box forming mechanism, mechanism interposed between the stack supporting mechanism and the box forming mechanism for applying an adhesive to the blanks, said mechanism being arranged in fixed relation and in longitudinal alignment one with another; and operating connections coordinated with and actuated through the box forming mechanism whereby delivery of the box blanks to the forming mechanism is timed to the forming operations thereof.

7. A box making machine comprising a adhesive applying mechanism.

box forming unit having power mechanism applied thereto, feeding mechanism adapted to deliver box bla'nks singly to said forming mechanism and mechanism between said feeding and forming mechanisms for applying an adhesive to the blanks whereby to effect adhesive junctures on the boxes in the forming operation thereof, said mechanism being arranged in fixed relation and in longitudinal alignment one with another; and operating connections driven from the box forming unit for operating the blank feeding and the adhesive applying mechanisms and to interrupt intermittently the forward movement of the blanks through the machine whereby to present the same to the box forming mechanism timed with the operation thereof.

8. A box making machine comprising a box forming unit having power mechanism applied thereto, box blank feeding mechanism and adhesive applying mechanism operativelv connected to the box forming unit, said connections comprising gear trains, a series of cams operatively associated with the gear trains and acting to impart intermittent operation to said blank feeding and adhesive applying mechanisms and stops arranged in the path of the box blanks through the machine acting to align the same for the respective operations thereon.

9. A box making machine comprising a box forming unit having power mechanism applied thereto, box blank feeding mechanismand adhesive applying mechanism operatively connected to the box forming unit, said connections comprising gear trains, a series of cams operatively associated with the gear trains and acting to impart intermittent operation to said blank feeding and adhesive applying mechanisms, stops and inter1nittently operable rollers arranged along the path of the box blanks through the machine acting to interrupt the movement of the blanksand to align the same for the respective operations thereon.

In testimony whereof, I affix my signature:

CHARLES BUTTER-FIELD. 

